Are these original speakers?

No, there were speakers long before these existed.

Does it need to be plugged in at all times?

These speakers require speaker wire to be connected to them when being listened to. There is no power cable to be plugged in.

Is this a single speaker or a pair of speakers?

Since this question was asked regarding the Atrium 8 version but Amazon shows it under both the 6 and 8 version, the Atrium 8 version is sold as a single speaker. The Atrium 6 version (and smaller) are sold as pairs.

What is the rms wattage per speaker? I cannot get a straight answer!

Polk claims they will handle up to 125 watts per channel, but with a sensitivity of 91dB 《8 ohm) these speakers get very loud quickly. I have an older Technics H class receiver (100 watts p/ch) & have never pushed over half volume on my pair. Note: I do enjoy cranking it up. With a freq. response of 45 - 27,000Hz, I found a sub wasn't needed. Placement, area & environment ( walls, height, corner availability) make a big difference when installing them correctly, but wattage shouldn't be a concern. These speakers are a great buy for the price.

ASIN	B00378KMIC
Audio Driver Size	6.5 Inches
Audio Driver Type	Dynamic Driver
Batteries	1 Lithium Ion batteries required.
Best Sellers Rank	#4,401 in Electronics ( See Top 100 in Electronics ) #1 in Outdoor Speakers
Color	Black
Compatible Devices	Laptop, Personal Computer, Smartphone
Control Method	Voice
Customer Package Type	Standard Packaging
Customer Reviews	4.6 4.6 out of 5 stars (9,846)
Date First Available	February 1, 2010
Global Trade Identification Number	00747192118891
Impedance	8 Ohms
Included Components	Mounting Bracket
Is Discontinued By Manufacturer	No
Is Waterproof	True
Item Weight	9.7 pounds
Item model number	AM8085-A
Language	English, English, English, English
Manufacturer	Polk Audio
Material	Powder-coated aluminum
Maximum Range	10 Meters
Model Name	ATRIUM8B
Mounting Type	180° Speed-Lock mounting
Number of Batteries	1 Lithium Ion batteries required.
Number of Items	1
Product Dimensions	9.2"D x 8.5"W x 12.9"H
Recommended Uses For Product	Music,Pool,Indoor,Outdoor
Series Number	8
Shape	rectangular prism body
Speaker Size	6.5 Inches
Speaker Type	Outdoor
Special Feature	Radio
Specific Uses For Product	Indoor and outdoor use
Style	Atrium 8
Subwoofer Connectivity Technology	Wired
Subwoofer Diameter	6.5 Inches
Surround Sound Channel Configuration	2.0
UPC	747192118891
Unit Count	1.0 Count
Warranty Type	Limited
Water Resistance Level	Water Resistant
Wireless Communication Technology	Bluetooth
Woofer Diameter	6.5 Inches

Atrium 8 Speaker - Black

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